213372306 has 40 divisors (see below), whose sum is σ = 546416640. Its totient is φ = 60963192.

The previous prime is 213372301. The next prime is 213372331. The reversal of 213372306 is 603273312.

213372306 is a `hidden beast` number, since 21 + 337 + 2 + 306 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 213372306.

It is not an unprimeable number, because it can be changed into a prime (213372301) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 92946 + ... + 95213.

It is an arithmetic number, because the mean of its divisors is an integer number (13660416).

Almost surely, 2^213372306 is an apocalyptic number.

213372306 is an abundant number, since it is smaller than the sum of its proper divisors (333044334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213372306 is a wasteful number, since it uses less digits than its factorization.

213372306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188180 (or 188171 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 213372306 is about 14607.2689439197. The cubic root of 213372306 is about 597.5570165533.

The spelling of 213372306 in words is "two hundred thirteen million, three hundred seventy-two thousand, three hundred six".